1220550050501 has 2 divisors, whose sum is σ = 1220550050502. Its totient is φ = 1220550050500.

The previous prime is 1220550050453. The next prime is 1220550050519. The reversal of 1220550050501 is 1050500550221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 896704833025 + 323845217476 = 946945^2 + 569074^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220550050501 - 2¹⁴ = 1220550034117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220550050581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610275025250 + 610275025251.

It is an arithmetic number, because the mean of its divisors is an integer number (610275025251).

Almost surely, 2^{1220550050501} is an apocalyptic number.

It is an amenable number.

1220550050501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220550050501 is an equidigital number, since it uses as much as digits as its factorization.

1220550050501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2500, while the sum is 26.

The spelling of 1220550050501 in words is "one trillion, two hundred twenty billion, five hundred fifty million, fifty thousand, five hundred one".